The shape of the dinosaur’s cloaca, the orifice used for excretion and mating, resembles those of crocodiles, which suggests dinosaurs did have penises after all
Source:
https://www.newscientist.com/article/2258023-dinosaur-fossil-with-preserved-genital-orifice-hints-how-they-mated/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home